Publish in OALib Journal
APC: Only $99
The aim is to evaluate the influence of oral contraceptive intake and menstrual cycle on the electrical activity and pressure pain threshold from anterior temporal and masseter muscles. Twenty-eight women on reproductive age were selected, 13 OC users and 15 nonusers. They were weekly submitted to electromyography and algometry of the anterior temporal and masseter muscles during three consecutive menstrual cycles. Electrical activities at rest position and PPTs of temporal and masseter muscles were not affected by menstrual cycle or by OCs uses. Comparison between groups demonstrated that working side electrical activity was increased in OC users in both muscles, except during lutheal phase for the anterior temporal. However, comparison within weeks did not demonstrate statistical difference. It was suggested that, in healthy women, oral contraceptive use may influence electrical activity, but different phases of the cycle may not.
The objective of this study was to systematically review the literature about the use of the operating microscope in endodontics.
It used sources of bibliographic cataloging electronically identified by MEDLINE via PubMed, LILACS, BBO and Scopus, using as descriptors: Endodontics,
anatomy and microscopy. The selected articles were identified from the titles
and abstracts, taking into consideration the following criteria: publications
ranging from January 2001 to November 2012, case reports, published in an indexed
journal, and publications in English language. The search showed 167 articles
related to this topic, and these 21 articles met the inclusion criteria. These
indicated that a higher magnification helps coronary access and the location of
channels to identify and interpret the complexities of the anatomy of root canals,
the removal of nuclei and intracoronary fractured instruments, to minimize
trauma of surgeries in soft and hard tissues, and detect fractures and microfractures.
It was found that its use has provided Endodontics with a significant improvement
in vision of the operative field, offering better quality jobs and a higher